Abstract
Quinoa is a facultative halophytic seed crop of increasing interest worldwide. Its performance declines under high salinity but can be improved by using halotolerant plant growth-promoting bacteria (PGPB) containing multi-traits, i.e. ACC-deaminase activity, exopolysaccharide secretion and auxin production. This study focussed on improving the productivity of quinoa through the use of six plant growth-promoting bacterial strains (both endophytic and rhizosphere). These were screened by conducting osmoadaptation assay, and the two most halotolerant strains (Enterobacter sp. (MN17) and Bacillus sp. (MN54)) were selected. These two strains were evaluated for their effects on growth, physiological characters and yield of quinoa. At the five leaf stage plants were irrigated with saline water having either 0 or 400mM NaCl. The results indicated that saline irrigation significantly decreased the growth of quinoa, whereas inoculation of plants with MN17 and MN54 mitigated the negative effects of salinity by improving plant water relations and decreasing Na+ uptake, which consequently, reduced osmotic and ionic stress. Strain MN54 performed better than MN17, which might be because of its better growth promoting traits and higher rhizosphere colonisation efficiency than MN17. Our results suggest that growth and productivity of quinoa could be improved by inoculating with highly tolerant PGPB strain in salt-affected soils.
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Claims 8
Claim · model-written summary
Saline irrigation significantly decreased quinoa growth.
- Taxon
- quinoa
Chenopodium quinoae0 - Treatment
- saline irrigatione0
- Outcome
- growth of quinoae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“saline irrigation significantly decreased the growth of quinoa”
Claim · model-written summary
MN17 inoculation mitigated adverse salinity effects on quinoa.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- inoculation of plants with MN17e0
- Interactor
- MN17e0symbiont
- Outcome
- negative effects of salinitye0
- Direction
- mitigatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation of plants with MN17 and MN54 mitigated the negative effects of salinity”
t0“quinoa”
Claim · model-written summary
MN54 inoculation mitigated adverse salinity effects on quinoa.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- inoculation of plants with MN17 and MN54e0
- Interactor
- MN54e0symbiont
- Outcome
- negative effects of salinitye0
- Direction
- mitigatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation of plants with MN17 and MN54 mitigated the negative effects of salinity”
t0“quinoa”
Claim · model-written summary
Bacterial inoculation improved quinoa water relations.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- inoculation of plants with MN17 and MN54e0
- Outcome
- plant water relationse0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“quinoa”
e0“inoculation of plants with MN17 and MN54 mitigated the negative effects of salinity by improving plant water relations”
Claim · model-written summary
Bacterial inoculation decreased sodium uptake in quinoa.
- Taxon
- quinoaChenopodium quinoat0
- Treatment
- inoculation of plants with MN17 and MN54e0
- Outcome
- Na+ uptakee0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“quinoa”
e0“inoculation of plants with MN17 and MN54 mitigated the negative effects of salinity by improving plant water relations and decreasing Na+ uptake”
Claim · model-written summary
MN54 performed better than MN17 in this quinoa study.
- Taxon
- quinoaChenopodium quinoat0
- Material
- Strain MN54e0
- Outcome
- performed bettere0
- Direction
- bettere0
- Comparator
- MN17e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“quinoa”
e0“Strain MN54 performed better than MN17”
Claim · model-written summary
MN54 had higher rhizosphere colonisation efficiency than MN17.
- Taxon
- quinoaChenopodium quinoat0
- Interactor
- MN17e0symbiont
- Outcome
- rhizosphere colonisation efficiencye0
- Direction
- highere0
- Comparator
- MN17e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“quinoa”
e0“higher rhizosphere colonisation efficiency than MN17”
Claim · model-written summary
The authors suggest inoculation with highly tolerant PGPB to improve quinoa growth and productivity in salt-affected soils.
- Taxon
- quinoaChenopodium quinoae0
- Treatment
- inoculating with highly tolerant PGPB straine0
- Interactor
- PGPBe0symbiont
- Outcome
- growth and productivity of quinoa could be improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and productivity of quinoa could be improved by inoculating with highly tolerant PGPB strain in salt-affected soils”
The same questions in other papers
irrigation · growth · Chenopodium quinoa (quinoa)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
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See all 5 papers →inoculation · physiology: ion balance · Chenopodium quinoa (quinoa)Results agree
1 paper in the same direction as this paper
- positive
salinity · growth · Chenopodium quinoa (quinoa)Results agree
13 papers in the same direction as this paper
- negative
- negative
- negative
10 papers more in this group
See all 14 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.